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Explain the Verify Process

Created: 09 Jan 2012 | 4 comments
navar holmes's picture
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I am truobleshooting why some of my large backup jobs (over 150GB) are slow during the verify process.  This is on Fulls and Diffs.

Can anyone explain the what is happening during the verify?

Comments

VJware's picture
09
Jan
2012
1 Vote +1
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Verify uses a checksum

Verify uses a checksum calculation method & BE checks the tape to read the data that has been written...Successful verify confirms that data can be read from the tape

Couple of reasons as to why verify could run slow if "fast append" & "fast file restore" are disabled

navar holmes's picture
10
Jan
2012
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What is "Fast Append" and

What is "Fast Append" and "Fast File Restore"?

Where do I enable it at?

 

Is there a detailed white paper on the verify process?

VJware's picture
10
Jan
2012
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Check this KB for enabling

Check this KB for enabling both - http://www.symantec.com/docs/TECH43336

I doubt there is any white paper on the verify process...

Kiran Bandi's picture
10
Jan
2012
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Symantec Article

How do the "verify" and "write checksums to media" processes work and why are they necessary?

http://www.symantec.com/docs/TECH18698